Factoring Quadratic Equations Concepts

The video tutorial explains how to solve quadratic equations by factoring, focusing on the difference of squares method. It provides three examples: X^2 - 9 = 0, 9X^2 - 64 = 0, and 25 - 4X^2 = 0. Each example demonstrates recognizing perfect squares, applying the difference of squares formula, and solving for X. The solutions are presented in both individual and combined forms, such as X = ±3. The tutorial aims to help students understand the factoring process and apply it to similar problems.

What is the first step in solving a quadratic equation by factoring?

• Multiply both sides by a factor

• Recognize perfect squares

• Identify the coefficients

• Add a constant to both sides

Tags

CCSS.HSA-REI.B.4B

In the equation x^2 - 9 = 0, what are the factors?

• (x + 2)(x - 2)

• (x + 1)(x - 1)

• (x + 9)(x - 9)

• (x + 3)(x - 3)

Tags

CCSS.HSA-REI.B.4B

What is the solution to the equation x^2 - 9 = 0?

• x = ±3

• x = -3

• x = 3

• x = 0

Tags

CCSS.8.EE.A.2

What is the first term in the equation 9x^2 - 64 = 0?

• 9x

• 64

• 81x^2

• 9x^2

Tags

CCSS.HSA.APR.C.4

What are the factors of 9x^2 - 64?

• (9x + 8)(9x - 8)

• (9x + 9)(9x - 9)

• (9x + 7)(9x - 7)

• (9x + 6)(9x - 6)

Tags

CCSS.8.EE.A.2

What is the solution to the equation 9x^2 - 64 = 0?

• x = ±8/9

• x = ±9/8

• x = ±1

• x = ±2

Tags

CCSS.HSA-REI.B.4B

In the equation 25 - 4x^2 = 0, what is the perfect square for 25?

• 15

• 10

• 25

• 5

Tags

CCSS.HSA.APR.C.4

What are the factors of 25 - 4x^2?

• (5 + 4x)(5 - 4x)

• (5 + 2x)(5 - 2x)

• (5 + 3x)(5 - 3x)

• (5 + x)(5 - x)

Tags

CCSS.HSA-REI.B.4B

What is the solution to the equation 25 - 4x^2 = 0?

• x = ±2/5

• x = ±1/2

• x = ±5/2

• x = ±3/2

Tags

CCSS.HSA-REI.B.4B

What is the key concept used in solving all the quadratic equations in this tutorial?

• Quotient of squares

• Product of squares

• Difference of squares

• Sum of squares

Tags

CCSS.HSA-REI.B.4B